Maxwell relaxation time for nonexponential α-relaxation phenomena in glassy systems

Karan Doss, Collin J. Wilkinson, Yongjian Yang, Kuo Hao Lee, Liping Huang, John C. Mauro

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

We examine the mean relaxation time predicted by the Maxwell relation for stress and structural α-relaxation phenomena. We express this relation using the Markov network framework and present an expression for the average relaxation time under equilibrium and nonequilibrium conditions that is rooted in the energy landscape of a material. We show that structural relaxation times calculated using the Maxwell relation must systematically underpredict the relaxation time. Finally, we report experimental evidence suggesting that the relaxation time obtained from shear viscosity measurements must correspond to a stress relaxation time.

Original languageEnglish (US)
Pages (from-to)3590-3599
Number of pages10
JournalJournal of the American Ceramic Society
Volume103
Issue number6
DOIs
StatePublished - Jun 1 2020

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

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